Ghost imaging with broad distance
Duan De-Yanga), Zhang Lub), Du Shao-Jiangc), Xia Yun-Jie†a)
       
The light beams are separated in signal arm by EIT media. L : the length of the EIT media. S : the effective broad distance of the GI. According to the above analysis, S = 5 cm. l r, l g represent the distance between the object and the EIT media. ρ 2r, ρ 2g are corresponding to the coordinates in the signal arm.